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Finding the Fourth Proportional to 520,034.70, 780,052.05 and 204,501.90

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Solution

The fourth proportional to 520,034.70, 780,052.05 and 204,501.90 is: 306,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,034.70 : 780,052.05 = 204,501.90 : x
  2. Step 2: Convert to fraction form
    520,034.70/780,052.05 = 204,501.90/x
  3. Step 3: Cross multiply
    520,034.70x = 780,052.05 × 204,501.90
  4. Step 4: Simplify right side
    520,034.70x = 159,522,126,323.90
  5. Step 5: Solve for x
    x = 159,522,126,323.90/520,034.70
  6. Step 6: Final answer
    x = 306,752.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.